fix: removed nix dependency and cephfs check, it's handled by systemd

Cargo.toml

@@ -5,7 +5,6 @@ edition = "2024"
 
 [dependencies]
 ldap3 = { version = "0.12", default-features = false, features = ["sync", "tls-rustls-ring"] }
-nix = { version = "0.29", features = ["fs"] }
 serde = { version = "1", features = ["derive"] }
 toml = "1.1"
 

config.toml

@@ -0,0 +1,7 @@
+# Belongs in /etc/loading-program/
+ldap_uri = "ldaps://1337.berkeley.edu"
+bind_dn = "CN=ldapbind,OU=Services,OU=Lab,DC=1337,DC=berkeley,DC=edu"
+bind_password_file = "/etc/loading-program/ldapbind.secret"
+base_dn = "OU=Users,OU=Lab,DC=1337,DC=berkeley,DC=edu"
+group_dn = "CN=lab-committee,OU=Groups,OU=Lab,DC=1337,DC=berkeley,DC=edu"
+homes_dir = "/mnt/stockroom/homes"

src/main.rs

@@ -15,7 +15,6 @@ use std::process::exit;
 use std::time::Duration;
 
 use ldap3::{ldap_escape, LdapConn, LdapConnSettings, Scope, SearchEntry};
-use nix::sys::statfs::statfs;
 use serde::Deserialize;
 
 const CEPH_SUPER_MAGIC: i64 = 0x00C3_6400;
@@ -37,19 +36,12 @@ struct Config {
     homes_dir: PathBuf,
     #[serde(default = "default_skel")]
     skel_dir: PathBuf,
-    /// Refuse to run unless homes_dir is on CephFS
-    #[serde(default = "default_true")]
-    require_cephfs: bool,
 }
 
 fn default_skel() -> PathBuf {
     PathBuf::from("/etc/skel")
 }
 
-fn default_true() -> bool {
-    true
-}
-
 struct Member {
     sam: String,
     dir_name: String,
@@ -132,13 +124,6 @@ fn fetch_members(cfg: &Config) -> Result<Vec<Member>, Box<dyn Error>> {
     Ok(members)
 }
 
-fn is_cephfs(path: &Path) -> bool {
-    match statfs(path) {
-        Ok(s) => s.filesystem_type().0 as i64 == CEPH_SUPER_MAGIC,
-        Err(_) => false,
-    }
-}
-
 /// Recursively copy `src` into the existing directory `dst`, chowning every
 /// entry (without following symlinks) to uid:gid.
 fn copy_skel(src: &Path, dst: &Path, uid: u32, gid: u32) -> io::Result<()> {
@@ -207,14 +192,6 @@ fn run() -> Result<bool, Box<dyn Error>> {
 
     let cfg: Config = toml::from_str(&fs::read_to_string(&config_path)?)?;
 
-    if cfg.require_cephfs && !is_cephfs(&cfg.homes_dir) {
-        return Err(format!(
-            "{} is not on CephFS; refusing to create directories",
-            cfg.homes_dir.display()
-        )
-        .into());
-    }
-
     let members = fetch_members(&cfg)?;
     println!("{} eligible member(s) found", members.len());